Features: Brand New and High Quality Super Speed USB 3.0 supports transfer speeds up to 5 Gbps - Actual transfer speed is limited by the setting of the connected device. Supports 2 downstream ports for all speeds. Low power consumption. SATA 15PIN power supply, sufficient and stable power to ensure stable operation of the equipment. Backward compatible with USB 2.0 and 1.1 devices; Supports simultaneous operation of multiple USB 3.0/2.0/1.1 devices. Operating System Compatibility: for Windows 10/8/8.1/7/Vista/XP 32/64-bit, Server 2003-2008 32/64-bit, Linux. Hot-swappable, plug and play; Enjoy copying videos, music, photos, data files between USB devices and your computer at lightning speed. Firmware can not only be updated at any time, but upgraded directly online. Specifications: Main Chip: D720202 Support Interface: PCI-E 1X 4X 8X 16X Supported Systems: WinXP/Vista/Win7/Win8 32bit/64bit MAC10.8 and above Compliance with PCI-Express 2.0 Compliance with USB 3.0 Super Speed Compliance with xHCI 1.0 Maximum transfer speed up to 5 Gbps, which is 10 times higher than 480 Mb/s USB2.0 Backward compatible with USB2.0, USB1.1, USB1.0 Transfer Rate: 5000/480/12/1.5 Mbps USB Power: 5V 2A (max) Size: Approx. 12x8cm/4.72x3.15in Note: Please allow 1-3mm error due to manual measurement, and there will be different colors as the display is different, please understand. Thank you. Package Includes: 1 x USB 3.0 Expansion Card